All 356's were swing axle. Vintages are VW-based, and therefore, also swing axle (as far as I know). Based on input from this forum, I had a camber compensator installed. I push mine pretty hard around corners and am really glad that I read up on Porsche handling characteristics before getting the car. For me, the handling is a big part of the original feel, just like the carbs, rear engine, side curtains, no radio, wooden steering wheel, etc. you could have an IRS, EFI, mid-engine, roll-up windows, banging stereo, air-bags, etc. It's all a matter of personal taste. At some point, for me, however, it stops being a Speedster. There is no right answer, only the one that fit's you. Here's an article about camber compensators http://www.356registry.org/tech/camber_compensator.html